ASTROSAT CZTI

Data Quality Report

Orbit 08682

Creation date: 2024-06-27T15:35:50.272806
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G07_024T01_9000001206_08682cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08682cztM0_level2_quad_clean.evt
Size (bytes)411,183,360117,250,560
Size392.1 MB 111.8 MB
Events in quadrant A2,798,461781,541
Events in quadrant B3,018,656802,516
Events in quadrant C3,291,848786,534
Events in quadrant D2,933,973759,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125212
B0130281
C0139151
D0130421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018400.664673%
B6018490.814224%
C60181712.841476%
D6018631.046859%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7234 6018 12 12 0.17% 0.20%
B 7234 6018 8 8 0.11% 0.13%
C 7234 6018 112 112 1.55% 1.86%
D 7234 6018 31 31 0.43% 0.52%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 35388 241.73 706 689 143.5
A 5 16 15301 101.79 706 689 143.5
A 0 254 13061 86.19 706 689 143.5
B 10 16 68952 515.0 717 701 132.5
B 10 245 52271 389.13 717 701 132.5
B 0 219 36176 267.68 717 701 132.5
C 1 16 484263 3047.6 696 699 158.7
C 14 234 74530 465.31 696 699 158.7
C 4 254 15772 95.0 696 699 158.7
D 2 152 175978 1025.52 700 676 170.9
D 7 71 29676 169.65 700 676 170.9
D 2 234 26722 152.37 700 676 170.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter